patch: Fix CVE-2018-6952 and CVE-2018-1000156

Patches taken from official git repository.

Added PKG_CPE_ID for proper CVE tracking.

Added PKG_BUILD_PARALLEL for faster compilation.

Also adjusted Makefile to be more similar to other projects.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
(cherry picked from commit 6f0ff25503)

devel/patch/Makefile

@@ -9,13 +9,17 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=patch
 PKG_VERSION:=2.7.6
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=@GNU/patch
 PKG_HASH:=ac610bda97abe0d9f6b7c963255a11dcb196c25e337c61f94e4778d632f1d8fd
+
 PKG_LICENSE:=GPL-3.0+
 PKG_LICENSE_FILES:=COPYING
+PKG_CPE_ID:=cpe:/a:gnu:patch
+
+PKG_BUILD_PARALLEL:=1
 
 include $(INCLUDE_DIR)/package.mk
 
@@ -23,7 +27,7 @@ define Package/patch
   SECTION:=devel
   CATEGORY:=Development
   TITLE:=patch
-  URL:=http://www.gnu.org/
+  URL:=https://savannah.gnu.org/projects/patch/
   MAINTAINER:=Russell Senior <russell@personaltelco.net>
 endef